We recommend that you download an updated version of a GPS navigation system to your phone such as WAZE which can give you live traffic information and advice. Some early Sat Navs recommended routes that are closed due to snow and become pistes during the winter so please bear this in mind. Most of the Cols in the area are closed throughout the winter so please double check. During busy weeks, there may be traffic controls in place in the Tarentaise Valley and the gendarmes will only let local vehicles off the main autoroute which is why we recommend you plan to arrive early or late if possible.